This patch (as1354) adds remote-wakeup support to the pnpacpi driver. The new can_wakeup method also allows other PNP protocol drivers (pnpbios or iaspnp) to add wakeup support, but I don't know enough about how they work to actually do it. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
With fa35b4926, I broke a lot of PNP resource assignment. That commit made PNPACPI include bridge windows as PNP resources, and PNP resource assignment treats any enabled overlapping PNP resources as conflicts. Since PCI host bridge windows typically include most of the I/O port space, this makes PNP port assigments fail. The PCI host bridge driver will eventually use those PNP window resources, so we should make PNP ignore them when checking for conflicts. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=15903 Reported-and-tested-by: Pavel Kysilka <goldenfish@linuxsoft.cz> Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
ACPI _CRS Address Space Descriptors have _MIN, _MAX, and _LEN. Linux has
been computing Address Spaces as [_MIN to _MIN + _LEN - 1]. Based on the
tests in the bug reports below, Windows apparently uses [_MIN to _MAX].
Per spec (ACPI 4.0, Table 6-40), for _CRS fixed-size, fixed location
descriptors, "_LEN must be (_MAX - _MIN + 1)", and when that's true, it
doesn't matter which way we compute the end. But of course, there are
BIOSes that don't follow this rule, and we're better off if Linux handles
those exceptions the same way as Windows.
This patch makes Linux use [_MIN to _MAX], as Windows seems to do. This
effectively reverts 3162b6f0c5e and replaces it with simpler code.
https://bugzilla.kernel.org/show_bug.cgi?id=14337 (round)
https://bugzilla.kernel.org/show_bug.cgi?id=15480 (truncate)
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The ACPI spec (sec 6.4.3.5 in v4.0) requires that for Address Space Resource Descriptors, _LEN <= _MAX - _MIN + 1 in all cases, but there are BIOSes that violate this. We experimentally determined that Windows truncates the resource so it doesn't extend past _MAX, so let's do the same thing in Linux. http://bugzilla.kernel.org/show_bug.cgi?id=15480 Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Add support for bus number resources. This is for bridges with a range of bus numbers behind them. Previously, PNP ignored bus number resources. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Add support for resource windows. This is for bridge resources, i.e., regions where a bridge forwards transactions from the primary to the secondary side. This does not add support for *setting* windows via the /proc interface. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (117 commits) ACPI processor: Fix section mismatch for processor_add() ACPI: Add platform-wide _OSC support. ACPI: cleanup pci_root _OSC code. ACPI: Add a generic API for _OSC -v2 msi-wmi: depend on backlight and fix corner-cases problems msi-wmi: switch to using input sparse keymap library msi-wmi: replace one-condition switch-case with if statement msi-wmi: remove unused field 'instance' in key_entry structure msi-wmi: remove custom runtime debug implementation msi-wmi: rework init msi-wmi: remove useless includes X86 drivers: Introduce msi-wmi driver Toshiba Bluetooth Enabling driver (RFKill handler v3) ACPI: fix for lapic_timer_propagate_broadcast() acpi_pad: squish warning ACPI: dock: minor whitespace and style cleanups ACPI: dock: add struct dock_station * directly to platform device data ACPI: dock: dock_add - hoist up platform_device_register_simple() ACPI: dock: remove global 'dock_device_name' ACPI: dock: combine add|alloc_dock_dependent_device (v2) ...